UpHeron
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Servers and applications

CVE-2023-3550

Mediawiki v1.40.0 does not validate namespaces used in XML files. Therefore, if the instance administrator allows XML file uploads, a remote attacker with a low-privileged user account can use this exploit to become an administrator by sending a malicious link to the instance administrator.

Severity
High 7.3
Published
25 Sept 2023
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
MediaWikiServers and applications · cpe:a:mediawiki:mediawiki
  • Version 1.40.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-3550
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-3550